1 /* Copyright (c) 2004-2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "instr/instr_interface.h"
8 #include "msg_private.h"
9 #include "msg_mailbox.h"
11 #include "xbt/sysdep.h"
13 #include "xbt/virtu.h"
14 #include "xbt/ex.h" /* ex_backtrace_display */
15 #include "xbt/replay.h"
16 #include "simgrid/sg_config.h" /* Configuration mechanism of SimGrid */
19 XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_kernel, msg,
21 "Logging specific to MSG (kernel)");
23 MSG_Global_t msg_global = NULL;
24 static void MSG_exit(void);
26 /********************************* MSG **************************************/
28 static void _sg_cfg_cb_msg_debug_multiple_use(const char *name, int pos)
30 msg_global->debug_multiple_use = xbt_cfg_get_boolean(_sg_cfg_set, name);
34 * \ingroup msg_simulation
35 * \brief Initialize MSG with less verifications
36 * You should use the MSG_init() function instead. Failing to do so may turn into PEBKAC some day. You've been warned.
38 void MSG_init_nocheck(int *argc, char **argv) {
40 TRACE_global_init(argc, argv);
42 xbt_getpid = MSG_process_self_PID;
45 msg_global = xbt_new0(s_MSG_Global_t, 1);
47 xbt_cfg_register(&_sg_cfg_set, "msg/debug_multiple_use",
48 "Print backtraces of both processes when there is a conflict of multiple use of a task",
49 xbt_cfgelm_boolean, 1, 1, _sg_cfg_cb_msg_debug_multiple_use, NULL);
50 xbt_cfg_setdefault_boolean(_sg_cfg_set, "msg/debug_multiple_use", "no");
52 SIMIX_global_init(argc, argv);
54 #ifdef MSG_USE_DEPRECATED
55 msg_global->max_channel = 0;
57 msg_global->sent_msg = 0;
58 msg_global->task_copy_callback = NULL;
59 msg_global->process_data_cleanup = NULL;
61 SIMIX_function_register_process_create(MSG_process_create_from_SIMIX);
62 SIMIX_function_register_process_cleanup(MSG_process_cleanup_from_SIMIX);
64 sg_platf_postparse_add_cb(MSG_post_create_environment);
68 /* Ignore total amount of messages sent during the simulation for heap comparison */
69 MC_ignore_heap(&(msg_global->sent_msg), sizeof(msg_global->sent_msg));
72 XBT_DEBUG("ADD MSG LEVELS");
73 MSG_HOST_LEVEL = xbt_lib_add_level(host_lib, (void_f_pvoid_t) __MSG_host_priv_free);
74 MSG_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, (void_f_pvoid_t) __MSG_storage_destroy);
75 MSG_FILE_LEVEL = xbt_lib_add_level(file_lib, (void_f_pvoid_t) __MSG_file_destroy);
76 if(sg_cfg_get_boolean("clean_atexit")) atexit(MSG_exit);
79 #ifdef MSG_USE_DEPRECATED
81 /* This deprecated function has to be called to fix the number of channel in the
82 simulation before creating any host. Indeed, each channel is
83 represented by a different mailbox on each #m_host_t. This
84 function can then be called only once. This function takes only one
86 * \param number the number of channel in the simulation. It has to be >0
88 msg_error_t MSG_set_channel_number(int number)
90 XBT_WARN("DEPRECATED! Please use aliases instead");
91 xbt_assert((msg_global)
92 && (msg_global->max_channel == 0),
93 "Channel number already set!");
95 msg_global->max_channel = number;
100 /* This deprecated function has to be called once the number of channel is fixed. I can't
101 figure out a reason why anyone would like to call this function but nevermind.
102 * \return the number of channel in the simulation.
104 int MSG_get_channel_number(void)
106 XBT_WARN("DEPRECATED! Please use aliases instead");
107 xbt_assert((msg_global)
108 && (msg_global->max_channel != 0),
109 "Channel number not set yet!");
111 return msg_global->max_channel;
115 /** \ingroup msg_simulation
116 * \brief Launch the MSG simulation
118 msg_error_t MSG_main(void)
120 /* Clean IO before the run */
124 if (MC_is_active()) {
132 /** \ingroup msg_simulation
133 * \brief set a configuration variable
135 * Do --help on any simgrid binary to see the list of currently existing configuration variables, and see Section @ref options.
138 * MSG_config("workstation/model","ptask_L07");
140 void MSG_config(const char *key, const char *value){
141 xbt_assert(msg_global,"ERROR: Please call MSG_init() before using MSG_config()");
142 xbt_cfg_set_as_string(_sg_cfg_set, key, value);
146 /** \ingroup msg_simulation
147 * \brief Kill all running process
149 * \param reset_PIDs should we reset the PID numbers. A negative
150 * number means no reset and a positive number will be used to set the PID
151 * of the next newly created process.
153 int MSG_process_killall(int reset_PIDs)
155 simcall_process_killall(reset_PIDs);
158 msg_global->session++;
164 static void MSG_exit(void) {
165 if (msg_global==NULL)
168 TRACE_surf_resource_utilization_release();
175 /** \ingroup msg_simulation
176 * \brief A clock (in second).
178 XBT_INLINE double MSG_get_clock(void)
180 return SIMIX_get_clock();
183 unsigned long int MSG_get_sent_msg()
185 return msg_global->sent_msg;
188 #ifdef MSG_USE_DEPRECATED
189 msg_error_t MSG_clean(void) {